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MOLECULAR DESIGN OF NEW KINDS OF AUXETIC POLYMERS AND NETWORKS
Hong-meiWu Gao-yuanWei DepartmentofPolymerScienceandEngineering CollegeofChemistry＆MolecularEngineering PekingUniversity Beijing100871 China第1页
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| 《高分子科学：英文版》2004年 第4期 | 摘要：Three new kinds of molecular networks are designed and predicted to exhibit negative Poisson ratios. Molecular mechanics calculations on these networks show that the magnitude of Poisson ratios depends on the relative flexibility of beam and arm structures. Several new kinds of auxetic polymers, whose successful synthesis should be easier than that of the corresponding auxetic networks, are then proposed. It is found that the kabob-like polymers with auxegens lying vertically on the main chain can acquire auxeticity while those with auxegens lying horizontally on the main chain cannot. Besides, a half kabob-like or pseudo-ladder polymer with auxegens linked at the intersection of the beam and the arm does show auxeticity when adopting constrictive conformers. It is, however, worthwhile noting that the origins of auxeticity still await and strongly deserve further experimental and theoretical investigations. | |
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| 格式：PDF 页数：8 页 页码范围：355-362页 | ||
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| 关 键 词：分子设计 分子模型 细胞增大剂 细胞增大活性 聚合物 负泊松系数 | ||
| 来源期刊：《高分子科学：英文版》2004年 第4期 | ||
| 收录数据库：中文科技期刊数据库 | ||
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